Wire-rod mill.



No. 670,271. Patented Mar. [9, |90l.

, A. J. DAY.

WIRE ROD MILL.

(Application filed July 28, 1900.) (No Model.)

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ANDREW .I. DAY, OF PITTSBURG, PENNSYLVANIA.

WIRE-ROD MILL.

:BPECIFEGATION forming part of Letters Patent No. 670,271, dated March 19, 1901.

Application filed July 26, 1900. Serial N0.Z4,958. (N0 model.)

To (1/77, lift/(HID it 'r/trty conceive:

Be it known that 1, ANDREW J. DAY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Wire-Rod Mills, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 shows in plan view repeater mechanism and rolls constructed in accordance with my invention. Figs. 2, 5, at, and 5 show in diagram modifications thereof.

My invention is designed to enable large billets of steel to be rolled into rods without incurring the difficulty which would arise from the excessive length of the loops into which the rod is formed, causing the rod to become chilled and preventing the successful continuance of the rolling operation. To this end I provide in connection with two of the sets of the rolls through which the rod passes repeater mechanism adapted to conduct the rod from one set of rolls to the next and arrange the delivery end of the repeater mechanism, or a bell-mouth thereof, so that it shall be movable and adapted to transfer the cut end of a traveling rod and to cause it to entera pass of the receiving-rolls different from that through which the rod passes previously to being out. By these means I am enabled to cut the rod at a middle portion at one of the loops, and by mechanically transferring the cut end-that is, the front end of the rear section of the rod-loop-into another pass of the receiving-rolls of the loop. By thus dividing the rod into sections, which travel simultaneously through difierent passes of the rolls, I am enabled to roll a billet of very large size without forming loops of excessive length, and I thus avoid the difficulty of chilling the metal, which would otherwise interfere with the operation. It is important that in thus effecting the transfer of the front end of the rear section to another pass of the rolls the transfer be effected by moving the repeater mechanism at the delivery portion, since by so doing I am enabled to perform this operation without causing the front end of the rear section of the rod to be deflected as it enters the repeater from the deliveryrolls. The deflection of the rod in my invention is caused only at the receiving-rolls, and this does no harm; but if the rod be materially deflected at the delivery-rolls on its entrance into the repeater it will prevent the successful operation of the device, because it will either cause the rod to buckle orkink in the repeater or it may prevent it from traveling around through the repeater at all. These difficulties do not occur in apparatus constructed in accordance with my invention.

Referring now to the drawings, 2 3 represent two rolls of a wirerod mill between which a loop is formed, 2 being the primary or delivery rolls and 3 the receiving-rolls.

4 represents a set of rolls through which the rod travels to the rolls 2 and which may be set in any suitable position relatively to the rolls 2.

The repeater mechanism comprises a curved trough 5,which may have two or more grooves 61 b and is adapted to receive the rods from the passes of the primary rolls 2. The repeater mechanism is movable at its delivery end. As shown in Fig. 1,Ieffect this by employing a series of bell-mouth pieces 6, 7, 8, and 9, the ends of which are set in the guides 10 in front of the rolls 3 and the rear ends of which are connected with a movable slide 11, which can be moved back and forthacross the ends of the grooves of the repeater, without, however, disconnecting the front ends of the bell-month sections from the guides in which they fit. Between the receiving end of the repeater and the rolls 2 is a choppingblock 12, at which the workman maycut the rod in two with a hatchet, or any suitable shear mechanism may be situated at this place for the same purpose.

In the operation of the device shown in Fig. 1 the front end of the rod leading to the rolls 2 passes around the curved trough 5, through the groove a thereof, and is guided by said groove through the bell-mouth 9 and guide 10 to the pass of the rolls 3, with which the guide registers. The rod thus forms a loop which passing out of the repeater in the usual Way extends over the floor of the mill, as shown at c. Ata suitable pointin the length of the rod the workman standing at the rolls 2 cuts the rod in two, having previously moved the slide 11 to the left into the position shown by dotted lines. This motion of the slide transfers the receiving end of the bell-mouth section 8, so as to bring it opposite to the groove (1, but leaves the bell-mouth 9 in register with the guide 10, so that the travel of the front section of the rod is not interfered with. The front end of the rear section when out passes on through the groove a and-is guided thereby so as to enter the bell-mouth 8, which is then in register with the groove a, and is deflected by the bellmouth into the second of the guides 10, entering thereby a pass of the rolls different from that through which the first section of the rod has traveled. Thenceforward the two sections of the rod travel through the mill without interference and through different roll-passes and the operation is proceeded with just as when two distinct rods are being rolled side by side or in succession. It will be noticed that the front end of the rear section of the rod is not deflected on its e11- trance into the groove a, but passes thereinto in a straight line, so that there is no tendency of the rod to buckle or to jump out of the trough without entering the bell-mouth section.

In the form of my device shown in Fig. 2 instead of using movable bell-mouth sections, as described above, I make the bell-mouth sections 6 7 8 9 stationary and divide the trough 5 into telescopically-fitted parts, so that their delivery ends can be moved laterally to bring them from register with the bellmouths 6 7' into register with the adjacent bell-mouths. In the operation of this device prior to the severing of the rod the parts 5 of the curved trough are moved laterally, so as to cause the front end of the rear section of the rod to enter an adjacent bell-mouth section different from that through which the advanced portion of the rodis traveling, and in this case, as in the apparatus of Fig. 1, the front end of the rear sect-ion of the rod is not deflected at the delivery-rolls.

In the device shown in Fig. 3 the principle is the same as in Fig. 2, except that the curved trough is divided into sections 5 5", the receivingsection 5 being stationary and the section 5 which has four troughs adapted to register, respectively, with the bell-mouths, being movable transversely to the section 5*. Previously to cutting the rod the section 5 is moved so as to bring a new groove opposite to the groove (t, through which the said front end of therear portion of the loop passes, and said front end is thereby directed into a bellmouth and guide adjacent to and dilferent from that through which the advance portion of the rod is traveling.

In the mechanism shown in Fig. 4 I connect the curved trough 5 with the bell-mouths 6 7" S" 9" and provide it with four grooves registering, respectively, with the four bellmouths. Before cutting the rod the entire repeater-section 5, with the bell-mouths, is shifted laterally. This brings a new trough a or b opposite to the pass of the rolls through a single groove, in which is placed a switch 13, arranged to deflect the front end of the rear portion of the loop to the bell-mouth adjacent to the one through which the advanced portion of the loop is passing. In this figure I show only two bell-mouths 6 7 and a single groove in the rolls 2 and 4 and two grooves in roll In Figs. 1 to 4 I show the rolls 3 arranged with four passes and four guides and four bell-mouth sections, enabling two main rods to be passed through the rolls simultaneously and each divided into two sections; but it will be noticed that by duplication of the apparatus it may be arranged to control a greater number of the rods.

The advantages of my invention will be appreciated by those skilled in the art. The mechanism is simple in construction and it will accomplish the purpose for which it is designed, enabling large billets to be rolled and a very large output obtained from a mill.

I claim 1. In a rod-mill, the combination with sets of rolls arranged to revolve in opposite directions, of repeater mechanism arranged to deliver the rod from one set of rolls to a succeeding set, and having a plurality of delivery end portions arranged to direct the cut end of a traveling rod to a different pass from that of the preceding section; substantially as described.

2. In a rod-mill, the combination with the rolls, of repeater mechanism arranged to deliver the rods from one set of rolls to a suc ceeding set revolving in the opposite direction, and having a plurality of delivery portions, said repeater mechanism being movable at its delivery portion and arranged to transfer the cut end of the traveling rod to a different pass from that through which the preceding section of the rod is traveling; substantially as described.

In testimony whereof I have hereunto set my hand.

ANDREWV J. DAY.

Witnesses:

L. A. CONNER, Jr., G. I. HOLDSHIP.

IIO 

